HardwareButton-Klasse

public class HardwareButton : Component

public class HardwareButton extends Component

public class HardwareButton extends Component

using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using Microsoft.WindowsCE.Forms;

namespace HardwareButtonTest
{
    public class Form1 : System.Windows.Forms.Form
    {
        private StatusBar statusBar1;
        private HardwareButton hwb1, hwb4;

        public Form1()
        {

            InitializeComponent();

            // Display OK button to close the application.
            this.ControlBox = true;
            this.MinimizeBox = false;

            // Create event-handler delegate for the KeyUp
            // event for this form. This form is associated
            // with each of the hardware buttons, and the
            // event occurs when a hardware button is pressed.
            // Note that you could also use the KeyDown event
            // instead of the KeyUp event.
            this.KeyPreview = true;
            this.KeyUp += new KeyEventHandler(this.OnKeyUp);
            
            // Call the method to configure
            // the hardware button.
            HBConfig();
        }

        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
        }
        private void InitializeComponent()
        {
            this.statusBar1 = new System.Windows.Forms.StatusBar();
            this.SuspendLayout();
//
// statusBar1
//
            this.statusBar1.Location = new System.Drawing.Point(0, 246);
            this.statusBar1.Name = "statusBar1";
            this.statusBar1.Size = new System.Drawing.Size(240, 22);
//
// Form1
//
            this.ClientSize = new System.Drawing.Size(240, 268);
            this.Controls.Add(this.statusBar1);
            this.Name = "Form1";
            this.Text = "HW Button Test";
            this.ResumeLayout(false);
            statusBar1.Text = "Press hardware button 1 or 4.";

        }

        static void Main()
        {
            Application.Run(new Form1());
        }


        // Configure hardware buttons
        // 1 and 4 to activate the current form.
        private void HBConfig()
            {
                try 
                {
                    hwb1 = new HardwareButton();
                    hwb4 = new HardwareButton();
                    hwb1.AssociatedControl = this;
                    hwb4.AssociatedControl = this;
                    hwb1.HardwareKey = HardwareKeys.ApplicationKey1;
                    hwb4.HardwareKey = HardwareKeys.ApplicationKey4;
                }
                catch (Exception exc)
                {
                    MessageBox.Show(exc.Message + " Check if the hardware button is physically available on this device.");
                }
        }

        // When a hardware button is pressed and released,
        // this form receives the KeyUp event. The OnKeyUp
        // method is used to determine which hardware
        // button was pressed, because the event data
        // specifies a member of the HardwareKeys enumeration.
        private void OnKeyUp(object sender, KeyEventArgs e)
        {
            switch ((HardwareKeys)e.KeyCode)
            {
                case HardwareKeys.ApplicationKey1:
                    statusBar1.Text = "Button 1 pressed.";
                    break;

                case HardwareKeys.ApplicationKey4:
                    statusBar1.Text = "Button 4 pressed.";
                    break;

                default:
                    break;
            }
        }
    }
}